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Table 2F-1. 3-D Probe Inspection Sheet
Probe Type and ID # Date of most recent calibration:
Fill in the tables below. For any item assigned a value of Ò1Ó, show its location in the accompanying probe diagrams.
Inspection of Probe Ports |
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Port ID |
Current Inspection (1=present, 0=absent) |
Compared to Previous Calibration (1=changed, 0=unchanged) |
Brief Description of Any Item with a Value of Ò1Ó in Preceding Columns |
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Dents |
Scratches |
Asymmetries |
Dents |
Scratches |
Asymmetries |
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P1 |
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P2 |
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P3 |
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P4 |
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P5 |
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Inspection of Probe Surfaces |
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Surface ID |
Current Inspection (1=present, 0=absent) |
Compared to Previous Calibration (1=changed, 0=unchanged) |
Brief Description of Any Item with a Value of Ò1Ó in Preceding Columns |
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Scratches |
Indentations |
Scratches |
Indentations |
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S1 |
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S2 |
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S3 |
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S4 |
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S5 |
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Surface IDs S1 through S5 refer to the surfaces adjacent to pressure ports with the corresponding numbers, e.g., S3 refers to the surface adjacent to pressure port P3.
QA/QC Check
Completeness Legibility Accuracy Specifications Reasonableness
Certification
I certify that the Probe ID meets or exceeds all specifications, criteria, and/or applicable design features required under Method 2F.
Certified by: Date:
Table 2F-1. 3-D Probe Inspection Sheet (continued)
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Table 2F-2. Rotational Position Check
Source: |
Date: |
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Test Location: |
Tester(s): |
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Probe Type: |
Affiliation: |
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Probe ID: |
Fully-Assembled Probe Length (in.): |
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Position |
Angle Comparisons |
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Distance of 2nd measurement device from probe head impact port in mm (in.) |
1st Device Angle measured by device aligned on the reference scribe line, including algebraic sign (degrees) |
2nd Device Angle measured by device mounted at each position to be used during testing, including algebraic sign (degrees) |
RADO Difference between readings by 1st and 2nd angle-measuring devices (degrees)a |
(Col. A) |
(Col. B) |
(Col. C) |
(Col. C - Col. B) |
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a The algebraic sign must be consistent with section 8.3.2.
Specifications: For the pre-test rotational position check, the value of RADO at each location along the probe shaft must be determined to within ±1¡. In the post-test check, RADO at each location must remain within ±2¡ of the value obtained in the pre-test check.
Table 2F-3. Example EPA Method 2F Field Data Form
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Source: |
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Date: |
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Source Location: |
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Test Personnel: |
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Measurement Location: |
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Probe Type / ID: |
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Run ID: |
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Stack Diameter: |
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Start Time: |
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Stack Area: |
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End Time: |
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Barometric Pressure (Pbar): |
in. Hg |
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Pressure Gauge ID: |
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Static Pressure (Pg): |
in. H2O |
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Pressure Gauge Readability: |
in. H2O |
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Temperature Gauge ID: |
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Measurement Response Time: |
sec. |
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Pre-Test |
Post-Test |
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RSLO |
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Probe Head Condition: Damage Noted? |
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RADO |
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Leak Check Performed? |
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Clock Time |
Traverse Point |
Yaw Angle, including algebraic sign (degrees) |
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Velocity Differential Pressure (P1-P2) |
Pitch Differential Pressure (P4-P5) |
Stack or Duct Gas Temperature (¡F) |
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Table 2F-4. Wind Tunnel Velocity Pressure Cross-Check
Wind Tunnel Facility: Date: Wind Tunnel Temperature: Barometric Pressure: Test Point Locations: Lowest Test Velocity in m/sec (ft/sec): Highest Test Velocity in m/sec (ft/sec): |
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Port |
Rep. |
Velocity Pressure (ΔPstd) |
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@ Lowest Test Velocity |
@ Highest Test Velocity |
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Calibration Pitot Tube Location |
1 |
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2 |
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3 |
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Average |
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Calibration Location Test Points * |
1 |
1 |
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2 |
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3 |
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Average |
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% Difference ** |
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2 |
1 |
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2 |
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3 |
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Average |
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% Difference ** |
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.. |
1 |
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2 |
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3 |
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Average |
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% Difference ** |
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* Measurements must be taken at all points in the calibration location as specified in section 10.1.1
** Percent Difference =
Specification: At each velocity setting, the average velocity pressure obtained at the calibration location shall be within ±2 percent or 0.01 in. H2O, whichever is less restrictive, of the average velocity pressure obtained at the fixed calibration pitot tube location.
Table 2F-5. Wind Tunnel Axial Flow Verification
Wind Tunnel Facility: Date: Wind Tunnel Temperature: Barometric Pressure: Probe Type/I.D. Used To Conduct Check: Test Point Locations: Lowest Test Velocity in m/sec (ft/sec): Highest Test Velocity in m/sec (ft/sec):
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Port |
@ Lowest Test Velocity |
@ Highest Test Velocity |
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Yaw Angle * (degrees) |
Pitch Angle * (degrees) |
Yaw Angle * (degrees) |
Pitch Angle * (degrees) |
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Calibration Location Test Points ** |
1 |
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2 |
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3 |
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.. |
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Calibration Pitot Tube Location |
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* When following the procedures in section 10.1.2.1, both the yaw and pitch angles are obtained from the same port. When following the procedures in section 10.1.2.2, the yaw angle is obtained using the port for the tested probe, and the pitch angle is obtained using the port for verification of axial flow.
** Yaw and pitch angle measurements must be taken at all points that define the calibration location (as per the requirements in section 10.1.1)
Specification: At each velocity setting, each measured yaw and pitch angle shall be within ±3¡ of 0¡ in accordance with the requirements in section 10.1.2.
Table 2F-6. Yaw Angle Calibration
Probe Type: |
Tester(s): |
Probe ID: |
Affiliation: |
Test Location: |
Date: |
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Repetition 1 |
Repetition 2 |
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Nominal Velocity Setting in m/sec (ft/sec) |
θnull (degrees) |
RSLO (degrees)* |
θnull (degrees) |
RSLO (degrees)* |
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Average of all recorded RSLO values: |
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* Include magnitude and algebraic sign in accordance with section 10.5.7. |
Table 2F-7. Determining the Magnitude of Reference Scribe Line Offset
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Probe/Angle-Measuring Device |
Magnitude of RSLO |
3-D probe with inclinometer |
90¡ - θnull |
3-D probe with protractor wheel and pointer |
θnull |
Table 2F-8. Wind Tunnel Calibration of Three-Dimensional Probe
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Wind Tunnel Facility: Wind Tunnel Location: Probe Type: Probe ID: Probe Calibration Date: Test Location: Calibration Pitot Tube Coeff. (Cp): Ambient Temperature (¡ F): Barometric Pressure (Pbar):
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Velocity Setting (ft/sec) |
Pitch Angle |
Calibration Pitot Tube |
Tested Probe |
Calc. F1 |
Calc. F2 |
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ΔPstd (in. H2O)* |
Temp. (¡F) |
P1-P2 (in. H2O) |
P4-P5 (in. H2O) |
Yaw Angle (degrees) |
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-30¡ |
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-25¡ |
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-20¡ |
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-15¡ |
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-10¡ |
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-5¡ |
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0¡ |
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5¡ |
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10¡ |
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15¡ |
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20¡ |
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25¡ |
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30¡ |
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* Calibration pitot tube measurements must, at a minimum, be taken before the tested probe reading at the first pitch angle setting, and after the tested probe reading at the last pitch angle setting in each replicate. See section 10.6.11.
Table 2F-9. Calibration Log for Three-Dimensional Probe
Probe ID:
Probe Type:
Probe Calibration Date:
Test Location:
Nominal Velocity:
Pitch Angle |
Average of All Repetitions |
Number of Repetitions |
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F1 |
F2 |
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-35¡ |
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-30¡ |
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-25¡ |
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-20¡ |
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-15¡ |
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-10¡ |
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-5¡ |
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0¡ |
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5¡ |
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10¡ |
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15¡ |
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20¡ |
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25¡ |
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30¡ |
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35¡ |
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